A dice that is in a state of flux until someone observes it.
For example: you blink and it has a new number on it without ever moving.
The number shown is always relevant to the situation in some way. Making it perfect for any game including a dice.

It teases with humans ability to see patterns where there aren't any by functioning like a-magic 8-ball.

If you where to consult the dice regarding the amount of eggs in a basket, then it would give a plausible answer, but not likely the correct one.

If you where to roll the dice manually, then it will stop immediately when coming in contact with the surface it lands on and instead forces other dies to roll in it's vicinity, and their sum is the number SCPn tried to roll

Was discovered after a costumer at a board-game and role-play boutique played with the dice and asked the owner about the rent for the facility over a year, at which point it exploded by all the dices trying to produce a believable answer (they guessed 100 000 to much).

Frankly, this is pretty much a bog-standard magical item. Sure, it does something supernatural, but the concept in and of itself isn't enough to make it interesting. You seem to be implying that it has some kind of intelligence to it; maybe play that up?

I actually quite like this one, it functions off of the Heisenberg principle, which always interests me, and probability manipulation, which has a lot of potential, I would recommend that you try to make a first draft, see how it turns out